The problem with all types of windows is that they eventually age and start to look shabby as well as perform badly. So if you have had your present windows for a long time and you feel that the time has come to change them, then you should consider getting high performance replacement widows that look well and that are very energy efficient. SR Windows & Glass
There can be various reasons why you might decide that you have had enough of your windows. Sometimes it might be that the glazing is getting cloudy and not as easy to see through as it was before. This could be due to seals going in the double glazing which is allowing moisture to build up between the glazing panes. This can be very frustrating and also unattractive to the appearance of the home.
If you are having any such difficulties with seals then the performance of your windows is compromised and they are starting to cost you money. The problem with under-performing window units is that they cannot retain heat in the wintertime as well as windows that are properly sealed. Therefore your heating bills are creeping higher and higher on a monthly basis. Perhaps you will not notice this for a while, but eventually you will realize that you are spending more money on heating oil than you used to.
Timber windows especially can become a problem because unlike uPVC windows, widows made of wood have to be painted every few years in order to keep them weather resistant. Over time a build up of paint in the joints can make these windows harder to close properly and that allows a lot of air leakage to and from the home.
It is possible to implement window repairs on wooden windows that have become gunged up with paint. It may involve stripping down the window frame to the timber and starting again and while you are doing this you may consider window glass replacement also. Now there is specialist glazing available that will enable windows to reflect the suns rays away from the home or perhaps an owner can install tinted glazing to shut out the glare of the sun.
If you feel that your windows are performing properly then do not feel that you should change them, simply for the sake of change. Older character windows are very attractive and if are not causing you to have to spend extra on keeping your home warm, then it might be a pity to remove them.